CN111071280B

CN111071280B - Axle box, bogie and rail vehicle

Info

Publication number: CN111071280B
Application number: CN201811219966.9A
Authority: CN
Inventors: 尹文龙; 许红江; 张隶新; 李兆盈; 皮国瑞; 张云龙
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2021-02-09
Anticipated expiration: 2038-10-19
Also published as: CN111071280A

Abstract

The embodiment of the application provides an axle box, bogie and rail vehicle, wherein, the axle box includes: the axle box comprises a box body, a first connecting piece and a second connecting piece, wherein the box body is provided with an axle hole for an axle to pass through, and the center line of the axle hole extends along a first direction; the box body is also provided with a first mounting hole and a second mounting hole, the center line of the first mounting hole is vertical to the first direction, and the center line of the second mounting hole is parallel to the first direction; the first mounting hole is communicated with the second mounting hole; and the bearing is arranged in the axle hole. The axle box provided by the embodiment of the application can be suitable for the railway vehicle bogie which cannot change the track gauge and can also be suitable for the railway vehicle bogie which can change the track gauge.

Description

Axle box, bogie and rail vehicle

Technical Field

The application relates to a rail vehicle structure technology, in particular to an axle box, a bogie and a rail vehicle.

Background

Rail vehicles are generally classified into monorail trains and double-track trains, wherein the double-track trains run along two equidistant rails. The track gauge is the distance between two tracks, and most countries or regions adopt uniform track gauge, while the track gauge of some countries or regions is different. Before a rail train drives from a track with one track gauge to a track with another track gauge, a rail changing operation is required, namely: the distance between two wheels connected on the same axle in the rail train is adjusted, so that the distance between the wheels can adapt to a new track gauge.

Through research on the variable-track-pitch bogie in various countries in the world, some countries have research, development, test and even operation work of the variable-track-pitch bogie in different degrees at present. The inventors have appreciated that a common pitch bogie comprises: the wheel pair comprises two half frameworks capable of moving relatively and a sleeper beam spanning between the two half frameworks, wherein two wheels on the wheel pair are respectively arranged on the half frameworks and can move along with the corresponding half frameworks, and a locking structure is arranged between the sleeper beam and the half frameworks. In the track distance changing process, the locking structure is used for unlocking the half frameworks and the sleeper beam, then the ground track changing device is used for driving the two half frameworks to move in the opposite direction or move in the opposite direction, so that the two wheels are driven to move in the opposite direction or move in the opposite direction, and after the semi frameworks and the sleeper beam are moved in place, the locking structure is used for locking the half frameworks and the sleeper beam, so that the track distance changing process is completed.

Because the dead weight of half framework and wheel is great, and for power bogie, still be provided with heavier traction motor on half framework, therefore, to the cooperation requirement between framework and the ground derailment device higher, need the ground derailment device to provide sufficient drive power just can promote half framework and remove to, the contact wear between framework and the ground derailment device is also comparatively serious.

Disclosure of Invention

Based on the above problem, the embodiment of the application provides an axle box, a bogie and a rail vehicle.

An embodiment of a first aspect of the present application provides an axle box, including:

the axle box comprises a box body, a first connecting piece and a second connecting piece, wherein the box body is provided with an axle hole for an axle to pass through, and the center line of the axle hole extends along a first direction; the box body is also provided with a first mounting hole and a second mounting hole, the center line of the first mounting hole is vertical to the first direction, and the center line of the second mounting hole is parallel to the first direction; the first mounting hole is communicated with the second mounting hole;

and the bearing is arranged in the axle hole.

An embodiment of the second aspect of the present application provides a bogie, including: an axle housing as described above.

An embodiment of a third aspect of the present application provides a rail vehicle, including: a bogie as described above.

According to the technical scheme provided by the embodiment of the application, an axle hole for an axle to pass through is formed in a box body of an axle box, and the center line of the axle hole extends along a first direction; a bearing is arranged in the axle hole and used for connecting the axle and the box body; the axle box is characterized in that a first mounting hole with a center line perpendicular to the first direction and a second mounting hole with a center line parallel to the first direction are further formed in the box body, the first mounting hole is communicated with the second mounting hole, and the axle box can be suitable for a bogie with an unchangeable rail and a bogie with a changeable rail.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a bogie according to a first embodiment of the present application;

FIG. 2 is a cross-sectional view of a wheelset coupled to an axle housing according to one embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of an axle housing according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an unlocking device according to a first embodiment of the present application;

fig. 5 is a first schematic structural diagram illustrating a first push rod and a second push rod of the unlocking device according to the first embodiment of the present application;

fig. 6 is a second schematic structural view illustrating the first push rod and the second push rod of the unlocking device according to the first embodiment of the present application in a matching manner;

FIG. 7 is a partial cross-sectional view of an exemplary embodiment of the present disclosure showing an unlocking device coupled to an axle housing;

FIG. 8 is an exploded view of the axle housing coupled to the unlocking device according to one embodiment of the present application;

fig. 9 is a schematic structural view of a support base according to an embodiment of the present disclosure;

fig. 10 is a partial sectional view of a first wheel pair provided in accordance with an embodiment of the present application;

FIG. 11 is an enlarged view of area A of FIG. 10;

fig. 12 is a partial sectional view of a second wheel set provided in the second embodiment of the present application;

fig. 13 is a partial sectional view three of a wheel set provided in the second embodiment of the present application;

fig. 14 is a partial sectional view four of a wheel set provided in the second embodiment of the present application;

fig. 15 is a schematic structural view of a wheel according to a second embodiment of the present application;

FIG. 16 is an enlarged view of area B of FIG. 15;

fig. 17 is a schematic structural view of an axle according to a second embodiment of the present application;

fig. 18 is a schematic structural diagram of a positioning plate according to a second embodiment of the present application;

fig. 19 is a schematic structural diagram of a buffering disc provided in the second embodiment of the present application;

FIG. 20 is a schematic structural view of a jaw provided in the second embodiment of the present application;

fig. 21 is a schematic structural view of a locking cover according to a second embodiment of the present application;

FIG. 22 is a schematic structural view of a dust cap according to the second embodiment of the present application;

fig. 23 is a schematic structural diagram of a ground track transfer device according to a third embodiment of the present application;

fig. 24 is a longitudinal sectional view of a ground track transfer device according to a third embodiment of the present application;

fig. 25 is a partial view of an unlocking rail in the ground rail changing device according to the third embodiment of the present application;

fig. 26 is a longitudinal sectional view of an unlocking rail in the ground rail changing device according to the third embodiment of the present application;

fig. 27 is a transverse cross-sectional view of an unlocking rail in a ground rail changing device according to a third embodiment of the present application.

Reference numerals:

1-a framework;

2-axle boxes; 21-a box body; 211-axle hole; 212-first mounting hole; 213-second mounting hole; 214-upper box body; 2141-first half tank; 215-lower box; 2151-second half-groove; 22-a bearing; 23-a support seat; 231-a support portion; 232-a connecting part; 2321-box body connecting hole; 233-rib section; 24-a bearing end cap; 241-intermediate connecting ring; 242-a cover body;

3-wheel pair; 31-axle; 311-spline grooves; 32-a wheel; 321-locking groove; 322-wheel body; 323-locking block; 324-a wheel disc; 325-a hub; 3251-first shaft hole; 326-a locking portion; 327-spline;

4-a locking device; 41-positioning plate; 411-second shaft hole; 412-a containment gap; 42-relief disc; 421-third axle hole; 422-connecting bump; 4221-first connection hole; 423-guide bar; 424-third connection hole; 43-a jaw; 431-a first end; 432-a second end; 433-a guide notch; 434-pin holes; 44-pin shaft; 45-locking cover; 451-fourth shaft hole; 452-a stop portion; 4521-guide surface; 453-fitting part; 454-a second connection hole; 46-a dust cover; 461-fifth axle hole; 47-a first return spring;

5-an unlocking device; 51-a first push rod; 511-a first guiding bevel; 52-a second push rod; 521-a second guide ramp; 522-guide rollers; 523-antifriction rollers; 53-unlocking the holder; 531-connecting shaft; 54-unlocking the roller; 55-a second return spring;

61-a first track; 62-a second track;

71-a guide rail; 72-unlocking the rail; 721-a rail body; 722-a support roller; 723-unlocking station; 724-guide roll.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

The present embodiments provide an axle box that may be disposed on a bogie of a rail vehicle.

Fig. 1 is a schematic structural diagram of a bogie provided in the first embodiment of the present application, and fig. 2 is a cross-sectional view of a wheelset and an axle box provided in the first embodiment of the present application. As shown in fig. 1 and 2, the bogie includes: frame 1, axle housing 2 and wheel set 3. The frame 1 may be an "H" shaped structure, and includes two longitudinal beams parallel to each other and extending in the longitudinal direction, and a cross beam spanning between the middle portions of the two longitudinal beams.

The axle housing 2 is connected to the frame 1 by a suspension. Specifically, the number of the axle boxes 2 is two, each connected to the end of the longitudinal beam by a series of suspensions.

The wheel set 3 comprises: an axle 31 and wheels 32. Both ends of the axle 31 are inserted into the axle boxes 2, respectively. The number of wheels 32 is two, and the wheels are symmetrically arranged on the axle 31.

Fig. 3 is a schematic structural diagram of an axle box according to an embodiment of the present application. As shown in fig. 3, the axle housing 2 includes: a case 21 and a bearing 22. The housing 21 has an axle hole 211 through which the axle 31 passes, and a center line of the axle hole 211 extends in a first direction, which is an axial direction of the axle 31. The first direction is parallel to the horizontal direction from the overall perspective of the bogie. Bearing 22 is provided in axle hole 211 between the side wall of axle hole 211 and axle 31 so that axle 31 can rotate relative to casing 21.

The case 21 further has a first mounting hole 212 and a second mounting hole 213, wherein a center line of the first mounting hole 212 is perpendicular to the first direction, and a center line of the second mounting hole 213 is parallel to the first direction. The first mounting hole 212 communicates with the second mounting hole 213.

The axle box 2 according to the present embodiment is suitable for a bogie whose track gauge is not changeable, and is also suitable for a bogie whose track gauge can be changed. For a bogie capable of changing the track gauge, the wheels 32 are movable in the axial direction relative to the axle 31. When the two wheels 32 move towards each other, the distance between the two wheels is reduced to meet the requirement of narrow gauge, so that the bogie adapts to the narrow gauge track; the two wheels 32 move away from each other and the distance between the two wheels increases to meet the requirement of wide gauge, so that the bogie is suitable for wide rail.

A locking device 4 is also provided on the wheelset 3 for locking the wheel 32 in a position that meets a narrow gauge or in a position that meets a wide gauge so that the relative position between the wheel 32 and the axle 31 remains fixed during a rail change of the rail vehicle is not required.

In addition, an unlocking device 5 is also adopted for driving the locking device 4 to unlock the wheels 32 in the process of rail transfer, so that the two wheels 32 can move towards or away from each other. The unlocking device 5 may be provided on the frame 1 or on the axle housing 2. The present embodiment will be described with reference to the example of being mounted on the axle case 2.

Fig. 4 is a schematic structural diagram of an unlocking device provided in the first embodiment of the present application, fig. 5 is a schematic structural diagram of a first push rod and a second push rod in the unlocking device provided in the first embodiment of the present application, and fig. 6 is a schematic structural diagram of a first push rod and a second push rod in the unlocking device provided in the first embodiment of the present application. As shown in fig. 4 to 6, the unlocking device 5 includes: a first push rod 51 and a second push rod 52. The first push rod 51 extends in a vertical direction, and is provided with a first guide slope 511. The second push rod 52 extends along the axial direction, a second guiding inclined surface 512 is arranged on the second push rod 52, and the second guiding inclined surface 512 is in contact fit with the first guiding inclined surface 511, so that when the first push rod 51 moves along a third direction parallel to the vertical direction, the second push rod 52 can be driven to move along the first direction, and the axial thrust is applied to the relieving disc 42.

Taking the structure shown in fig. 5 and 6 as an example, in fig. 5, the unlocking device 5 is in a non-operating state, and the bogie is in a normal operating state, that is: a non-tracking state. Specifically, the first push rod 51 is located at the lowermost position, and the second push rod 52 is located at the leftmost position. In fig. 6, the first push rod 51 moves upward, and the second push rod 52 is urged to move rightward (i.e., toward the first direction) by a component force in the axial direction of the pushing force applied to the second guide slope 521 via the first guide slope 511, which is perpendicular to the second guide slope 521. The pushing force for moving the first push rod 51 upwards can be provided by the ground track-changing device, and can also be provided by other mechanisms arranged on the bogie.

In addition, when the second push rod 52 moves leftward, a pushing force perpendicular to the first guide slope 511 is applied to the first guide slope 511 by the second guide slope 521, and a component force of the pushing force in a vertical direction urges the first push rod 51 to move downward.

A mounting bracket may be provided on the frame 1, and a structure for assembling the first push rod 51 and the second push rod 52 and for restricting the moving direction of the first push rod 51 and the second push rod 52 only to the central line direction thereof may be provided on the mounting bracket. Alternatively, the first push rod 51 and the second push rod 52 may be provided on the axle box provided in the present embodiment.

Fig. 7 is a partial cross-sectional view of an unlocking device provided in accordance with an embodiment of the present invention, which is coupled to an axle housing. Specifically, as shown in fig. 7, the first push rod 51 is disposed in the first mounting hole 212 of the case 21 and is movable in the vertical direction in the first mounting hole 212. The second push rod 52 is disposed in the second mounting hole 213 and is movable in the horizontal direction in the second mounting hole 213. The two push rods are matched at the communication position of the two mounting holes through the guide inclined plane.

The other realization mode is as follows: the first push rod 51 may also extend in the horizontal direction, and correspondingly, the center line of the first mounting hole 212 also extends in the horizontal direction, so that when the first push rod 51 moves in the horizontal direction, the first guide inclined surface 511 and the second guide inclined surface 521 cooperate to push the second push rod 52 to move in the first direction.

According to the technical scheme provided by the embodiment, an axle hole for an axle to pass through is formed in a box body of an axle box, and the center line of the axle hole extends along a first direction; a bearing is arranged in the axle hole and used for connecting the axle and the box body; the axle box is characterized in that a first mounting hole with a center line perpendicular to the first direction and a second mounting hole with a center line parallel to the first direction are further formed in the box body, the first mounting hole is communicated with the second mounting hole, and the axle box can be suitable for a bogie with an unchangeable rail and a bogie with a changeable rail. The axle box can be equipped with an unlocking device for driving wheels to unlock, and the integration level of the bogie is also improved.

The first push rod 51 and the second push rod 52 are both two in number and symmetrically arranged on both horizontal sides of the axle 31. Correspondingly, two first mounting holes 212 are provided in case 21, and are symmetrically provided on both horizontal sides of axle hole 212, and two second mounting holes 213 are provided, and are symmetrically provided on both horizontal sides of axle hole 212.

Fig. 8 is an exploded view of the coupling of the axle housing and the unlocking device according to an embodiment of the present invention. As shown in fig. 8, the box 21 may specifically include: an upper case 214 and a lower case 215. The upper case 214 has a first half tank 2141 opened downward, and the lower case 215 has a second half tank 2151 opened upward. The upper housing 214 and the lower housing 215 are coupled together, and the open ends of the first and

second halves

2141, 2151 are aligned to define the axle bore 211.

Go up box 214 and lower box 215 between accessible bolt and connect, specifically, go up box 214 and be provided with the screw hole, be provided with the bolt via hole coaxial with the screw hole on the lower box 215, adopt the bolt to pass bolt via hole and screw hole in proper order with last box 214 and lower box 215 fixed connection.

The first mounting hole 212 is a blind hole with an opening facing downward. The second mounting hole 213 is a blind hole that opens in a direction for fitting the axle 31. The first mounting hole 212 and the second mounting hole 213 are both provided in the upper case 214. In fig. 8, the lower case 215 is provided with a through hole coaxial with the first mounting hole 212 so that the first push rod 51 is inserted into the first mounting hole 212 from below the lower case 215.

Further, an axle box end cover 24 is connected to the box body 21, and is covered at one end of the axle hole 211. Specifically, the bearing end cap 24 includes: an intermediate connecting ring 241 and a cover 242. The intermediate connection ring 241 has a through hole through which the axle 31 passes, and the through hole is coaxial with the axle hole 211. One end of the intermediate connection ring 241 is connected to the housing 21 by a bolt, and the other end is connected to the cover 242 by a bolt, and the cover 242 covers the end of the intermediate connection ring 241 to reduce foreign particles and the like from entering the axle housing 2.

If the driving force for the bogie to change the track is from the ground track-changing device, the axle box 2 can be further improved:

fig. 9 is a schematic structural view of a support base according to an embodiment of the present application. As shown in fig. 2, 7 and 9, a support base 23 is provided on the bottom surface of the case 21, and the support base 23 can be fixed to the bottom of the case 21 by means of bolts. Specifically, the support seat 23 includes: a support portion 231, a connection portion 232, and a rib 233 connected between the support portion 231 and the connection portion 232.

The bottom surface of the support portion 231 located below is a support plane for being lapped on the ground rail transfer device, and the ground rail transfer device plays a role of supporting the axle box 2.

The connection part 232 is provided with a connection hole (referred to as a case connection hole 2321) for assembling with the case, and can be connected with the case 21 by a bolt.

Example two

The locking device 4 can lock the wheels 32 and unlock the wheels 32 by the driving force of the unlocking device 5, so that the two wheels 32 can move toward or away from each other. The embodiment also provides a realization mode of the locking device 4 and the wheel pair 3.

Fig. 10 is a partial sectional view of a wheel pair provided in the second embodiment of the present application, and fig. 11 is an enlarged view of a region a in fig. 10. As shown in fig. 2, 10 and 11, at least two sets of locking grooves 321 are provided on the wheel 32, and the at least two sets of locking grooves 321 are arranged in order in the axial direction. Each set of locking grooves 321 includes two symmetrically arranged locking grooves 321, and the opening directions of the two locking grooves 321 are opposite. The lock groove 321 may be provided in the hub of the wheel 32 or in the wheel disc, and in this embodiment, only the lock groove is provided in the hub as an example.

The locking device 4 includes: a puck 41, a relief puck 42, and a clamp. The positioning plate 41 is disposed on the axle 31 and is fixedly connected to the axle 31 to rotate synchronously with the axle 31.

The clamp includes: two jaws 43 are symmetrically disposed. The jaw 43 has a first end 431, a second end 432, and a rotating portion located between the first end and the second end, and the rotating portion is connected to the positioning plate 41 by a pin shaft 44 so that the jaw 43 can rotate relative to the positioning plate 41 about the pin shaft 44 as a rotating shaft.

The damper disk 42 is provided on the positioning disk 41 so as to rotate in synchronization with the positioning disk 41. The unlocking device 5 is configured to apply an axial pushing force to the relieving disc 42, so that the relieving disc 42 can move in a first direction parallel to the axial direction to apply a force to the first end 431 of the caliper 43, so that the caliper 43 rotates to the second end 432 to be disengaged from the locking groove 321, and the wheel 32 is unlocked.

When the axial pushing force of the unlocking means 5 is removed, the relieving plate 42 can be moved in a second direction opposite to the first direction by other components to apply a force to the first end 431 of the caliper 43 to rotate the caliper 43 until the second end 432 is inserted into the locking groove 321, and when the second end 432 is inserted into the locking groove 321, the wheel 32 is locked so that the relative position between the wheel 32 and the axle 31 is kept fixed.

Fig. 12 is a second partial sectional view of a wheel set provided in the second embodiment of the present application, fig. 13 is a third partial sectional view of the wheel set provided in the second embodiment of the present application, and fig. 14 is a fourth partial sectional view of the wheel set provided in the second embodiment of the present application. The engagement between the locking device 4 and the wheel 32 during the transition from narrow gauge to wide gauge is shown in sequence in figures 10, 12, 13 and 14.

As shown in fig. 10, the wheel 32 is located at a narrow gauge position, and the second ends of the claws 43 are caught in the locking grooves 321, locking the wheel 32 at the current position.

As shown in fig. 12, the damping plate 42 moves rightward, and applies an axial thrust to the first end of the claw 43, so that the claw 43 is rotated about the pin 44, and the second end of the claw 43 is disengaged from the locking groove 321, thereby unlocking the wheel 32.

As shown in fig. 13, the wheel 32 can be moved to the left by the driving of the ground derailing apparatus until reaching the wide gauge position.

As shown in fig. 14, the releasing plate 42 can move leftward, and an axial pulling force is applied to the first end of the clamping jaw 43, so that the clamping jaw 43 rotates around the pin 44, and the second end of the clamping jaw 43 is inserted into the locking groove 321, so as to lock the wheel 32 at the current position, and complete the track-changing process.

The technical scheme is that the wheels are driven to move to realize rail transfer, and the wheels are locked when moving in place. The two claws 43 are used to form a clamp, and are respectively inserted into a set of locking grooves 321 to clamp the wheel 32 from both sides of the hub, thereby improving the reliability of locking.

The hub can be provided with three locking parts which are uniformly distributed along the circumferential direction, and the central angle between every two adjacent locking parts is 120 degrees. Each locking portion is provided with at least two sets of locking grooves 321. Correspondingly, three clamps are arranged and evenly distributed along the circumferential direction, and the clamps respectively correspond to one locking part in position, so that one clamp is used for clamping one locking part.

Fig. 15 is a schematic structural view of a wheel according to a second embodiment of the present application, and fig. 16 is an enlarged view of a region B in fig. 15. As shown in fig. 11, 15 and 16, the wheel 32 includes: a wheel body 322 and a locking block 323.

The wheel body 322 has a wheel disc 324 and a hub 325 disposed at the center of the wheel disc 324, and the hub 325 is centrally provided with a first axle hole 3251 through which the axle 31 passes. At least two locking parts 326 are uniformly arranged on the outer circumferential surface of the hub 325, and in fig. 15 and 16, three locking parts 326 are uniformly arranged on the hub 325 along the outer circumferential surface of the hub 325. Each locking portion 326 is provided with two locking notches (not shown) arranged in sequence along the axial direction. A locking block 323 is arranged in each locking notch, and locking grooves 321 are formed in two ends of each locking block 323. The locking block 323 is in interference fit with the locking notch and is fastened in the locking notch.

The inner wall of the hub 325 is provided with a coupling key, and correspondingly, a key groove may be provided on the outer circumferential surface of the axle 31, into which the coupling key is inserted so that the wheel 32 and the axle 31 can be rotated in synchronization and the wheel 32 can be moved in the axial direction with respect to the axle 31.

Fig. 17 is a schematic structural view of an axle according to a second embodiment of the present application. As shown in fig. 2, 16 and 17, the connecting key on the inner wall of the hub 325 is a spline 327, and correspondingly, a spline groove 311 is provided on the axle 31 to be engaged with the spline 327.

Fig. 18 is a schematic structural diagram of a positioning plate according to a second embodiment of the present application. As shown in fig. 18, the positioning plate 41 has a second shaft hole 411, and is fitted over the axle 31 through the second shaft hole 411. The axle 31 is in interference fit with the second shaft hole 411, so that the positioning plate 41 and the axle 31 can rotate synchronously.

Fig. 19 is a schematic structural diagram of a relief disc according to a second embodiment of the present application. As shown in fig. 19, the relief disc 42 is provided with a third shaft hole 421 through which the axle 31 passes. The damping disk 42 rotates in synchronization with the positioning disk 41 and is also movable in the axial direction relative to the positioning disk 41. Specifically, a first drive structure is provided on the puck 41 and a second drive structure is provided on the mitigation disc 42. The second driving structure cooperates with the first driving structure to rotate the positioning plate 41 with the axle 31 and simultaneously rotate the damping plate 42.

For example, the following may be used: the first drive structure is a receiving indentation 412 provided on the puck 41. As shown in fig. 11, the positioning plate 41 is provided with three receiving notches 412 which are uniformly arranged along the circumferential direction. The second driving structure is a connecting protrusion 422 provided on the relief disc 42, and the connecting protrusion 422 is provided on an end surface of the relief disc 42 facing the positioning disc 41. The number of the connecting protrusions 422 is three, and the connecting protrusions are correspondingly inserted into one of the accommodating notches 412. When the positioning plate 41 rotates along with the axle 31, the receiving notch 412 applies a rotational force to the connecting protrusion 422, thereby rotating the damping plate 42. The axial length of the coupling projection 422 can be set according to the thickness of the positioning plate 41, so that the damping plate 42 cannot be removed from the receiving notch 412 when moving to the left to the extreme position or moving to the right to the extreme position.

The mode of relieving the disc 42 from driving the jaw 43 to rotate can be realized by various means, and the embodiment provides a specific implementation mode:

a first guide formation is provided at the first end 431 of the jaw 43 and a second guide formation is provided at the end face of the relief disc 42 facing the jaw 43, the second guide formation cooperating with the first guide formation to apply a force in the axial direction to the first end 431 via the first guide formation.

Fig. 20 is a schematic structural view of a jaw provided in the second embodiment of the present application. As shown in fig. 11 and 20, the first guide structure, specifically, the guide indentation 433, is disposed at the first end 431. The guide notch 433 opens toward the relief disc 42, and a center line of the guide notch 433 is an arc line and extends in substantially the same direction as the first end 431. The second guide structure is a guide rod 423 that can be accommodated in the guide recess 433. The guide rod 423 is provided on the buffer plate 42, specifically, on the coupling protrusion 422, and the guide rod 423 is perpendicular to the surface of the jaw 43. The middle portion of the jaw 43 is further provided with a pin hole 434 for inserting the pin shaft 44.

When the damping disk 42 moves rightward in the view of fig. 10 to 14, the guide rod 423 is inserted into the guide notch 433, and pushes the first end 431 of the jaw 43 during the movement in the guide notch 433, so as to urge the jaw 43 to rotate counterclockwise, so that the second end 432 is disengaged from the locking groove 321, which corresponds to the opening of the clamp, and the wheel 32 is released, thereby unlocking the wheel 32. When the damping disk 42 is moved leftward, the guide rod 423 moves outward along the guide notch 433 and applies a pushing force to the first end 431 of the jaw 43, causing the jaw 43 to rotate clockwise so that the second end 432 is inserted into the locking groove 321, corresponding to the closing of the jaw, to lock the wheel 32.

As shown in fig. 19, the connecting protrusion 422 includes two connecting plates arranged in parallel, each of the two connecting plates has a first connecting hole 4221, and the guide rod 423 is inserted into the first connecting hole 4221 and located between the two connecting plates. The first end 431 of the claw 43 may be located at a corresponding position between the two connecting plates, or may be located outside an outer connecting plate, which is a connecting plate away from the center of the relief disc 42.

On the basis of the technical scheme, as shown in fig. 10 and 11, the device further comprises a locking cover 45 connected with the relief disc 42. Rotates in synchronism with and moves in synchronism with the relief disc 42. The locking cover 45 is provided with a stopper 452 on the inner side thereof for stopping and holding the second end 432 of the jaw 43 inserted into the locking groove 321 after the second end 432 is inserted into the locking groove 321.

Specifically, fig. 21 is a schematic structural diagram of a locking cover according to the second embodiment of the present application. As shown in fig. 21, the locking cover 45 has a fourth shaft hole 451 through which the axle 31 passes. The locking cover 45 is sleeved on the axle 31 through the fourth shaft hole 451 and is positioned between the buffer disc 42 and the wheel 31. The locking cover 45 is provided with a limiting part 452, and the limiting part 452 has a protruding structure. After the second end 432 of the jaw 43 is inserted into the locking groove 321, the protrusion of the stopper portion 452 abuts against the second end 432 to prevent the second end 432 from being disengaged from the locking groove 321.

The locking cover 45 is provided with six limiting parts 452, the two limiting parts 452 are in a group, and the three limiting parts 452 are uniformly arranged along the circumferential direction. A set of limiting parts 452 is used to limit the position of a clamp, that is: a stopper 452 is provided for abutting against one of the claws 43.

Furthermore, the stopper 452 is further provided with a guide surface 4521, and the guide surface 4521 is located on a side facing the relief disc 42. The locking cover 45 and the relief disc 42 move synchronously in the axial direction, and the guide surface 4521 contacts with the back of the second end 432 of the jaw 43 to guide the process of disengaging the second end 432 from the locking groove 321, so as to prevent the second end 432 from being opened at a too large angle.

The locking cover 45 is fixedly connected with the relief disc 42, and the locking cover and the relief disc move synchronously along the axial direction and rotate synchronously. Specifically, as shown in fig. 21, a protruding fitting portion 453 is provided on an inner wall of the locking cover 45, a second coupling hole 454 is provided on the fitting portion 453, and the second coupling hole 454 is a threaded hole having a center line parallel to the axial direction. Correspondingly, as shown in fig. 19, the damping disk 42 is provided with third connecting holes 424, and the number and positions of the third connecting holes 424 correspond to those of the second connecting holes 454, so that the third connecting holes 424 and the second connecting holes 454 are fixed by bolts passing through the third connecting holes 424 and the second connecting holes 454 in sequence.

Further, fig. 22 is a schematic structural diagram of a dust cover according to a second embodiment of the present application. As shown in fig. 10 and 22, a dust cover 46 may be further disposed between the locking cover 45 and the wheel 32, and the dust cover 46 has a fifth shaft hole 461, and is sleeved on the axle 31 through the fifth shaft hole 461. The dust shield 46 has a first end that is disposed around the outside of the locking cap 45 in the axial direction and a second end that is connected to the wheel 32, such as by bolting to the disc 324 of the wheel 32.

A seal is provided between the first end of the dust cap 46 and the locking cap 45, for example: rubber ring, sponge ring etc. for seal the clearance between dust cover 46 and the locking lid 45, avoid external impurity granule, steam etc. to get into in locking device 4 and then influence the action of tong claw 43.

With respect to the structure of the locking device 4, the unlocking device 5 is further optimized:

further, as shown in fig. 5 and 6, a guide roller 522 may be further provided on the second push rod 52, and the first guide slope 511 is contacted by a rolling surface of the guide roller 522. The first guide slope 511 applies a radial thrust to the guide roller 522, and a component force of the thrust in the axial direction urges the second push rod 52 to move in the first direction. By adopting rolling friction between the guide roller 522 and the first guide inclined plane 511, the smooth degree of the movement of the second push rod 52 is improved, and the second push rod 52 is prevented from being blocked due to large friction force of plane-to-plane contact, so that the locking device 4 cannot be unlocked.

In another implementation, the guide roller 522 is directly disposed at the end of the second push rod 52, and the second guide slope 521 is not required.

The motive force to move the damping disk 42 in the first direction is provided by the second push rod 52. The motive force to slow the movement of the disc 42 in the second direction may be provided by an elastic member. Specifically, as shown in fig. 11, a first return spring 47 is provided between the relief plate 42 and the positioning plate 41. When the damper disc 42 is moved in the first direction by the urging of the second push rod 52, the first return spring 47 is pressurized to be compressed, and elastic potential energy is accumulated. When the urging force of the second push rod 52 disappears, the elastic potential energy of the first return spring 47 is converted into a repulsive force, and the relief disc 42 is urged to move in the second direction.

Further, since the damper disc 42 is rotated with the spindle 31, the unlocking means 5 is not rotated. When the second push rod 52 contacts the relief disc 42 and provides a pushing force, there is relative movement between the end of the second push rod 52 and the relief disc 42, and the wear is severe. As shown in fig. 4, a wear reduction roller 523 is provided at an end portion of the second push rod 52 facing the relief disc 42, and a tread surface of the wear reduction roller 523 is in contact with an end surface of the relief disc 42 to reduce wear by causing rolling friction therebetween.

Further, the unlocking device 5 further includes: and the unlocking support 53 is connected with the bottom ends of the two first push rods 51, and the unlocking support 53 receives the driving force of the ground track transfer device and simultaneously transmits the driving force to the two first push rods 51.

The structure of the unlocking bracket 53 may be set according to the structure of the ground derailing apparatus so as to be adapted to the ground derailing apparatus to more accurately contact the ground derailing apparatus and receive driving force during the travel of the railway vehicle. In the present embodiment, as shown in fig. 2 and 4, an unlocking roller 54 is provided at the bottom of the unlocking bracket 53 for rolling contact with the ground track transfer device and receiving the driving force.

Specifically, a connecting shaft 531 is provided at the bottom of the unlocking bracket 53 for fitting the unlocking roller 54. The wheel surface of the unlocking roller 54 is in contact with the ground track transfer device, and rolling friction exists between the wheel surface and the ground track transfer device.

EXAMPLE III

The embodiment provides a ground track-changing device, which is used for driving the wheel 32 to move along the axial direction and driving the unlocking device 5 to act.

Fig. 23 is a schematic structural diagram of a ground track transfer device according to a third embodiment of the present application. As shown in fig. 23, the ground derailing apparatus is disposed between the first rail 61 and the second rail 62, assuming that the gauge of the first rail 61 is smaller than that of the second rail 62.

The ground becomes rail device includes: guide rail 71 and unlock rail 72. The guide rails 71 are used for applying a pushing force to the wheels 32 to urge the wheels 32 to move toward or away from each other in the axial direction. The unlocking rail 72 is used for supporting the axle box 2 and applying an urging force to the unlocking device 5 to urge the unlocking device 5 to operate, and further to urge the locking device 4 to operate, thereby unlocking the wheels 32.

In particular, the guide rail 71 comprises two pairs of rails, one for each monorail engaging the first 61 and second 62 rails. The centre line of each pair of tracks is at an angle to the centre line of the first track 61 and also at an angle to the centre line of the second track 62. Assuming that the rail vehicle is traveling from the first rail 61 to the second rail 62, the wheel 32 leaves the first rail 61 and enters the guide rail 71, and the guide rail 71 applies a driving force to the wheel 32 to force the two wheels 32 in the wheel pair to move away from each other until reaching the second rail 62.

Fig. 24 is a longitudinal sectional view of a ground rail transferring apparatus according to a third embodiment of the present application, fig. 25 is a partial view of an unlocking rail in the ground rail transferring apparatus according to the third embodiment of the present application, and fig. 26 is a longitudinal sectional view of the unlocking rail in the ground rail transferring apparatus according to the third embodiment of the present application.

As shown in fig. 24, the unlocking rail 72 includes: a rail body 721, and a support roller 722 provided on the rail body 721. The support roller 722 is provided in plural number, and has an axis parallel to the first direction, and supports the support base 23 on the axle box 2. An unlocking table 723 is provided inside the rail body 721, and the top surface of the unlocking table 723 is high in the middle and gradually lowered at both ends in the traveling direction of the rail vehicle, as shown in fig. 25 and 26. The unlocking stage 723 is used to contact the unlocking roller 54 in the unlocking means 5 and push the first push rod 51 to ascend and descend through the top surface of its height change.

Specifically, when the wheel pair reaches the ground track-changing device, the supporting seat 23 is lapped on the supporting roller 722, and rolling friction is formed between the supporting seat and the supporting roller 722. The unlocking table 723 pushes the first push rod 51 to move upward, drives the second push rod 52 to move along the first direction, and pushes the buffer disc 42 to move along the first direction, so as to apply an axial thrust to the caliper 43 to rotate the caliper 43 until the second end of the caliper 43 is disengaged from the locking groove 321, and unlock the wheel 32.

Under the driving action of the guide rail 71, the two wheels 32 move away from each other, and the distance between the two wheels increases. Thereafter, the height of the top surface of the unlocking table 723 is lowered, and upward urging force is no longer applied to the unlocking roller 54, which corresponds to the unlocking means 5 not applying the urging force in the first direction to the damping disk 42. The damping plate 42 is moved in the second direction by the resilient force of the first return spring 47, and the claw 43 is rotated until the second end 432 is inserted into the other locking groove 321, so as to lock the wheel 32 at the position of the new track gauge. In addition, the damping disk 42 is moved in the second direction, and the second push rod 52 is also pushed to move in the second direction. The first push rod 51 moves downward by the resilient force of the second return spring 55.

Fig. 27 is a transverse cross-sectional view of an unlocking rail in a ground rail changing device according to a third embodiment of the present application. As shown in fig. 27, further, a guide roller 724 is provided on the rail body 721 toward one side of the axle boxes 2, and the guide roller 724 is plural in number and has an axial direction parallel to the vertical direction. The guide rollers 724 are plural in number, and are arranged in order along the direction in which the rail vehicle travels. The guide roller 724 is adapted to contact the support base 23 of the axle housing 2 and to have rolling friction with the support base 23.

Example four

The present embodiment provides a bogie comprising an axle box as provided above.

The embodiment also provides a railway vehicle which comprises the bogie.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An axle housing, comprising:

the axle box comprises a box body, a first connecting piece and a second connecting piece, wherein the box body is provided with an axle hole for an axle to pass through, and the center line of the axle hole extends along a first direction; the box body is also provided with a first mounting hole and a second mounting hole, the center line of the first mounting hole is vertical to the first direction, and the center line of the second mounting hole is parallel to the first direction; the first mounting hole is communicated with the second mounting hole; the first mounting hole and the second mounting hole are used for penetrating an unlocking device, and the unlocking device can lock wheels on an axle;

a bearing disposed within the axle bore;

the supporting seat is connected to the bottom of the box body; the bottom of the supporting seat is provided with a supporting plane which is used for being lapped on an unlocking rail in the ground rail transfer device; the top of the supporting seat is provided with a connecting hole for being assembled with the box body; the supporting seat is pushed by the unlocking rail to enable the unlocking device to unlock the wheel, so that the wheel can move relative to the axle.

2. The axle box of claim 1, wherein the first direction is a horizontal direction; the central line of the first mounting hole is parallel to the vertical direction.

3. The axle housing of claim 2, wherein the housing comprises:

the upper box body is provided with a first half groove;

the lower box body is provided with a second half groove; the lower box body is connected with the upper box body, and the axle hole is defined by the first half groove and the second half groove.

4. The axle housing of claim 3, wherein the first and second mounting holes are disposed on the upper housing.

5. The axle box according to claim 4,

the first mounting hole is a blind hole, and an opening of the first mounting hole faces downwards;

the second mounting hole is a blind hole, and the opening of the second mounting hole faces the direction for assembling the axle.

6. The axle housing of claim 3, wherein the upper housing is provided with a threaded bore and the lower housing is provided with a bolt through bore, the bolt through bore being coaxial with the threaded bore.

7. The axle housing of claim 1, further comprising:

and the axle box end cover is connected with the box body and covers one end of the axle hole.

8. The axle housing of claim 7, wherein the axle housing end cap comprises:

the middle connecting ring is connected with the box body through a bolt; the intermediate connecting ring is coaxial with the axle hole;

and the cover body is connected with the middle connecting ring through bolts and covers the end part of the middle connecting ring.

9. A bogie, comprising: an axlebox according to any one of claims 1 to 8.

10. A rail vehicle, comprising: a bogie as claimed in claim 9.